deep-research

deep-research is a skill for Claude Code from Fusion-Data-Company/bristol-os. It costs 82 tokens per session (641 once invoked), scanned A, original, MIT.

A research workflow that turns a broad question into a detailed briefing backed by sources.

In plain words
What is it for?
Use it to investigate markets, regulations, competitors, costs, trends, people, companies, or other non-trivial topics when you need a sourced answer.
Why use it?
It removes the need to search many places manually and helps separate a complex question into smaller checks before reaching a conclusion.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the bristol-os plugin — 14 skills shipped together

Good fit Use it to investigate markets, regulations, competitors, costs, trends, people, companies, or other non-trivial topics when you need a sourced answer.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fusion-data-company/bristol-os/deep-research
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Fusion-Data-Company/bristol-os --skill deep-research
Clone the repo
git clone --depth 1 https://github.com/Fusion-Data-Company/bristol-os

Made for: Claude Code.

Or install bristol-os, the plugin that ships this one along with the rest of its 14 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for deep-research

README.md
[![agentmods](https://agentmods.dev/badge/skills/fusion-data-company/bristol-os/deep-research/github.svg)](https://agentmods.dev/skills/fusion-data-company/bristol-os/deep-research)
Your own site
<a href="https://agentmods.dev/skills/fusion-data-company/bristol-os/deep-research"><img src="https://agentmods.dev/badge/skills/fusion-data-company/bristol-os/deep-research/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for deep-research

Your own site · 80×15
<a href="https://agentmods.dev/skills/fusion-data-company/bristol-os/deep-research"><img src="https://agentmods.dev/badge/skills/fusion-data-company/bristol-os/deep-research.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 641 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00082 $0.00641
Opus 5 $0.00041 $0.00320
Sonnet 5 $0.00016 $0.00128
Haiku 4.5 $0.00008 $0.00064

Measured 12d ago against content hash d944c23690bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

deep-research scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/bristol-os/skills/deep-research/SKILL.md · 38 lines

How it starts

The opening of the file, as written. The whole thing — 38 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Deep Research

Turn a plain-language question into a thorough, source-cited briefing. This is the research engine the other Bristol plays lean on.

When to use

The user wants more than a quick answer: "research the Nashville multifamily market," "what's happening with construction costs," "look into this developer," "find everything on this incentive program."

Tools, in order of preference

  1. Baked-in research keys (always available, no setup): load bristol-os/keys.env and call Tavily, Exa, and Firecrawl directly — exact commands in bristol-os/docs/DATA-SOURCES.md. Also FRED/Census for macro & demographic facts, and Quarry (quarry-parcels) for property/owner facts.
  2. Claude's built-in web search — always available.
  3. Yardi Matrix / finance connectors if connected (real estate / market data). Run the full method below regardless of which tools fire.

Method

  1. Clarify the decision. One sharp question if scope is unclear: what decision will this inform, and how deep do they need it? Then proceed.
  2. Decompose the question into 4–8 sub-questions. State them.
  3. Fan out: search each sub-question. Prefer primary and authoritative sources (government data, company filings, official market reports, reputable trade press). Note the date of every source.
  4. Triangulate: confirm important facts across 2+ independent sources. Flag anything you can only find once as "single-source — verify."
  5. Adversarially check: actively look for data that contradicts the emerging answer. Note disagreements rather than smoothing them over.
  6. Synthesize into the output format below. Lead with the answer.
  7. Cite everything with source + date. Never present an unsourced number as fact.

Output (save to the workspace, e.g. research/<topic>-<date>.md)

  • Bottom line — the answer in 3–5 sentences.
  • Key findings — the important points, each with a source and date.
  • What's uncertain / contested — gaps, conflicting data, single-source items.
  • So what for Bristol — implications for the deal/market/decision at hand.
  • Sources — list with links and dates.

Read the full file on GitHub · 38 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 38 lines · 82 tokens per session scan A d944c23690bd

Subscribe to this mod's changes

deep-research is a skill published in the GitHub repository Fusion-Data-Company/bristol-os (1 stars, last pushed 2mo ago), licensed MIT. It adds 82 tokens to every session and 641 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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